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Water-based paint and article coated with same

A water-based paint, water-based medium technology, applied in anti-fouling/underwater paint, polyurea/polyurethane paint, coatings, etc., can solve the problem of low safety of paint

Pending Publication Date: 2022-05-10
DIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the safety of these coatings is low, requiring materials that do not contain quaternary ammonium salts

Method used

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  • Water-based paint and article coated with same
  • Water-based paint and article coated with same

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0055] As a preparation method of the water-based paint of the present invention, for example, the above-mentioned visible light-responsive photocatalyst (A) and pigments can be added to the water-based resin composition obtained by dispersing the above-mentioned resin (R) in the above-mentioned water-based medium (W), and use Sand mill, disperser and other mixing machines for preparation. If necessary, by further mixing a curing agent, a two-component type paint can be prepared.

[0056] As the coating method of the water-based paint of the present invention, for example, a gravure coater, a roll coater, a comma coater, a knife coater, an air knife coater, a curtain coater, a kiss coater, etc. Cloth machine, spray coater, wheel coater, spin coater, dipping, screen printing, spraying, applicator, rod coater, brushing and other methods.

[0057] The water-based paint of the present invention can provide a cured coating film excellent in virus resistance to the surface of vario...

preparation example 1

[0063] (Preparation Example 1: Preparation of Visible Light Responsive Photocatalyst (A-1))

[0064] (1) Titanium oxide

[0065] a) Crystalline rutile titanium oxide

[0066] b) Preparation method: liquid phase method (sulfuric acid method)

[0067] c) Physical property value

[0068] · BET specific surface area: 9.0m 2 / g

[0069] · Rutile rate: 95.4%

[0070] ·Primary particle size: 0.18μm

[0071] (2) Manufacturing process

[0072] a) Mixing process (reaction process)

[0073] 600 parts by mass of the aforementioned titanium oxide, 8 parts by mass of copper chloride (ii) dihydrate, and 900 parts by mass of water were mixed in a stainless steel container. Next, the mixture was stirred with a stirrer ("ROBO MICS" manufactured by Tokuku Kikka Kogyo Co., Ltd.), and a 1 mol / L sodium hydroxide aqueous solution was added dropwise until the pH of the mixed solution became 10.

[0074] b) Dehydration process

[0075] Filtration under reduced pressure was carried out using ...

Embodiment 1

[0078] (Example 1: manufacture of water-based paint (1))

[0079] 11.2 parts by mass of the visible light-responsive photocatalyst (A-1) obtained above, titanium oxide pigment (manufactured by Chemours "Ti-Pure R-706") 33.7 parts by mass and 19.9 parts by mass of ion-exchanged water were kneaded for 30 minutes with a sand mill to obtain a pigment dispersion. 29.3 parts by mass of a polyisocyanate resin ("Burnock DNW-5500" manufactured by DIC Corporation) was added as a curing agent to the obtained pigment dispersion, and stirred for 5 minutes with a disperser to obtain an aqueous paint (1).

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Abstract

Provided are: a metal product which can be used in automobiles, railway vehicles, ships, machines, furniture, cans, building structures, and the like; plastic products such as automobile parts and household appliances; woodworking products such as furniture and building materials; the present invention relates to a water-based coating material which is highly safe for various coating material applications such as inorganic raw material products, building materials, glass, and the like, and which can impart excellent antiviral properties to various substrates, a water-based coating material, and an article coated with the water-based coating material. The aqueous coating material is characterized by containing a visible-light-responsive photocatalyst (A), a resin (R), and an aqueous medium (W).

Description

technical field [0001] The invention relates to water-based paint and articles coated with the water-based paint. Background technique [0002] In the past, water-based paints have been used to protect the surface of various items, improve their appearance, and improve their functions. However, in recent years, hygienic functions such as antibacterial and antiviral properties are expected, especially as new influenza, SARS (serious Acute Respiratory Syndrome), Norovirus and other infection countermeasures require water-based coatings that can obtain coating films with antiviral properties (virus inactivation). [0003] A paint containing a quaternary ammonium salt is known as a paint capable of imparting antibacterial properties and antiviral properties to a coating film (for example, refer to Patent Document 1). However, the safety of these coatings is low, requiring materials that do not contain quaternary ammonium salts. [0004] prior art literature [0005] patent do...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/04C09D175/06C09D5/14C09D7/61
CPCC09D175/04C09D175/06C09D5/14C09D7/61C08K2003/2237C08K2003/2241C08K3/22C08K9/12C08K3/16
Inventor 三上明音向井隆大水聪一郎河中俊介藤田幸介
Owner DIC CORP